| 6.1 Release NotesRelease Notes for Red Hat Enterprise Linux 6.1Legal NoticeCopyright © 2011 Red Hat. The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution-Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/. In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux® is the registered trademark of Linus Torvalds in the United States and other countries. Java® is a registered trademark of Oracle and/or its affiliates. XFS® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL® is a registered trademark of MySQL AB in the United States, the European Union and other countries. All other trademarks are the property of their respective owners. 1801 Varsity Drive Raleigh, NC 27606-2072 USA Phone: +1 919 754 3700 Phone: 888 733 4281 Fax: +1 919 754 3701
Daftar IsiAbstractRed Hat Enterprise Linux minor releases are an aggregation of individual enhancement, security and bug fix errata. The Red Hat Enterprise Linux 6.1 Release Notes documents the major changes made to the Red Hat Enterprise Linux 6 operating system and its accompanying applications for this minor release. Detailed notes on all changes in this minor release are available in the Technical Notes. Red Hat Enterprise Linux 6.1 introduces biosdevname, an optional convention for naming network interfaces. biosdevname assigns names to network interfaces based on their physical location. Note, however that biosdevname is disabled by default, except for a limited set of Dell systems. ixgbe driver for Intel 10 Gigabit PCI Express Network devices mlx4 driver for Mellanox ConnectX HCA InfiniBand hardware, providing support for Mellanox Connect X2/X3 10GB devices be2net driver for ServerEngines BladeEngine2 10Gbps network devices bnx2 driver for Broadcom NetXtreme II network devices, including support for Advanced Error Reporting (AER), and PPC support for 5709 devices bnx2i driver for Broadcom NetXtreme II iSCSI bnx2x driver for Broadcom Everest network devices igbvf and ixgbevf Virtual Function drivers tg3 driver for Broadcom Tigon3 ethernet devices bfa driver for Brocade Fibre Channel to PCIe Host Bus Adapters bna driver for Brocade 10G PCIe ethernet Controllers cxgb4 driver for Chelsio Terminator4 10G Unified Wire Network controllers be2iscsi driver for ServerEngines BladeEngine 2 Open iSCSI devices be2net driver for ServerEngines BladeEngine2 10Gbps network devices lpfc driver for Emulex Fibre Channel HBAs e1000 and e1000e drivers for Intel PRO/1000 network devices Intel Iron Pond ethernet driver Intel Kelsey Peak Wireless driver megaraid_sas driver for LSI MegaRAID SAS controllers mpt2sas driver for the SAS-2 family of adapters from LSI Logic
The kernel shipped in Red Hat Enterprise Linux 6.1 includes several hundred bug fixes for and enhancements to the Linux kernel. For details concerning every bug fixed in and every enhancement added to the kernel for this release, refer to the kernel chapter in the Red Hat Enterprise Linux 6.1 Technical Notes.Red Hat Enterprise Linux 6.1 introduces many improvements and updates to control groups, including the ability to throttle block device Input/Output (I/O) to a particular device, either by bytes per second or I/O Per Second (IOPS). Additionally, integration with libvirt and other userspace tools is provided by the new ability to create hierarchical block device control groups. The new block device control group tunable group_idle , provides better throughput with control groups while maintaining fairness. Red Hat Enterprise Linux 6.1 also introduces the new autogroup feature, reducing latencies and allowing for more interactive tasks during CPU intensive workloads. This cgsnapshot tool, providing the ability to take a snapshot of the current control group configuration. Control Groups and other resource management features are discussed in detail in the Red Hat Enterprise Linux 6 Resource Management GuideRed Hat Enterprise Linux 6.1 introduces the kernel message dumper, which is called when a kernel panic occurs. The kernel message dumper provides easier crash analysis and allows 3rd party kernel message logging to alternative targets. Red Hat Enterprise Linux 6.1 introduces the xorg-x11-drv-xgi video driver to support the XGI Z9S AND Z11 chipsets. The SIS driver that provided support for older XGI hardware is no longer being updated to support new hardware. Monitors that do not supply Extended Display Identification Data (EDID) to the operating system now have a default resolution of 1024 x 768 pixels. 5. Authentication and Interoperability Improved online/offline detection Improved LDAP access-control provider with support for shadow and authorizedService Improved caching and cleanup logic for different schemata Improved DNS based discovery Automatic Kerberos ticket renewal Enablement of the Kerberos FAST protocol Better handling of password expiration The Deployment Guide contains a section that describes how to install and configure SSSD. Samba in Red Hat Enterprise Linux 6.1 allows users to use their own Kerberos credentials when accessing CIFS mount, rather than needing the same mount credentials for all access to the mount. The Security Guide assists users and administrators in learning the processes and practices of securing workstations and servers against local and remote intrusion, exploitation and malicious activity. Installation and boot support is added in Red Hat Enterprise Linux 6.1 for the Emulex 10GbE PCI-E Gen2 and Chelsio T4 10GbE network adapters. Additionally, the GRUB bootloader is updated with support for booting volumes with a 4KB sector size on UEFI systems. The installer in Red Hat Enterprise Linux 6.1 will detect unsupported hardware platforms and provide a notification to the user. The installation will continue, but the following message is displayed This hardware (or a combination thereof) is not supported by Red Hat. For more information on supported hardware, please refer to http://www.redhat.com/hardware. Red Hat Enterprise Linux 6 supports installation over iSCSI using auto-detection of BIOS iSCSI settings in iBFT. However, reconfiguration of the iBFT settings after installation was not possible. In Red Hat enterprise Linux 6.1, TCP/IP settings and iSCSI initiator configuration are dynamically configured from iBFT settings during boot time. SystemTap in Red Hat Enterprise Linux 6.1 is updated to version 1.4, providing: Alpha version of remote host scripting with --remote USER@HOST Optimization of near zero cost for dormant user probe points
Red Hat Enterprise Linux 6.1 provides Valgrind version 3.6.0. An updated version of the Eclipse development environment is available in Red Hat Enterprise Linux 6.1, providing the following updates and enhancements: All the major plugins are refreshed, including Valgrind and OProfile integration and the tools for working with C and C++ The Mylyn task-focused framework is updated Enhanced resource filtering for workspace contents performance enhancements when working with C, C++ and Java code bases
Allows browsers such as Firefox to load Java applets embedded in a web page Provides framework to launch JNLP (Java Network Launching Protocol) files
Clusters are multiple computers (nodes) working in concert to increase reliability, scalability, and availability to critical production services. High Availability using Red Hat Enterprise Linux 6 can be deployed in a variety of configurations to suit varying needs for performance, high-availability, load balancing, and file sharing. The following major updates to clustering are available in Red Hat Enterprise Linux 6.1 Rgmanager now supports the concept of critical and non-critical resources System Administrators can now configure and run a cluster using command line tools. This feature provides an alternative to manually editing the cluster.conf configuration file or using the graphical configuration tool, Luci. Red Hat Enterprise Linux High Availability on Red Hat Enterprise Linux KVM hosts is fully supported Comprehensive SNMP Trap support from central cluster daemons and sub-parts Additional watchdog integration allows a node to reboot itself when it loses quorum
The development library packages provided in the High Availability, Load Balancer, and Resilient Storage Add-On channels are not considered supported nor are their ABIs or APIs guaranteed to be consistent. The Cluster Suite Overview document provides an overview of Red Hat Cluster Suite for Red Hat Enterprise Linux 6. Additionally, the High Availability Administration document describes the configuration and management of Red Hat cluster systems for Red Hat Enterprise Linux 6. KSM in Red Hat Enterprise Linux 6.1 is Transparent HugePage aware. KSM has the ability to scan subpages inside hugepages and split them when merging is possible. Additionally, KSM enablement can now be controlled on a per-VM basis. On local systems, the new Red Hat Subscription Manager offers both GUI and command-line tools to manage the local system and its allocated subscriptions. A better method to handle subscriptions will help our customers allocate their subscriptions more effectively and will make installing and updating Red Hat products much simpler. In Red Hat Enterprise Linux 6.0 and 5.6 and older, subscriptions were based on access to channels and were assigned to an organization as a whole. Starting in Red Hat Enterprise Linux 6.1, subscriptions are based on installed products and are assigned to systems individually. This provides clear and delineated control over the products used by and subscribed to by a specific system. As part of the new subscription structure, the Customer Portal provides two paths to manage subscriptions: Certificate-based Red Hat Network, which uses the new subscription service, and RHN Classic, which uses the traditional channels. Systems must be managed either by the new Certificate-based Red Hat Network or by RHN Classic, but not both. If a system was previously managed by RHN Classic, there is no direct, supported migration path from RHN Classic to Certificate-based Red Hat Network. A. Revision HistoryRevision History |
---|
Revision 0-40.0 | Thu Dec 13 2012 | Martin Prpič | Added a note about removal of multilib Python packages. |
| Revision 0-39 | Fri May 20 2011 | Ryan Lerch | Copyedit in the Installation section |
| Revision 1-0 | Tue Mar 22 2011 | Ryan Lerch | Initial Version of the Red Hat Enterprise Linux 6.1 Release Notes |
|
|
| |